Where is correctness defined?

What is the antecedent for 'it,' the 'answer' or the 'question'?

Does this phrase even make sense? I suspect it is supposed to be some 'recursive cleverness,' or just not make sense?

C) 0% because for something to be correct it follows that it fits a given definition of correctness of which none is given.

now the recursion has started to work based on the above reasoning

So if C)0% is the "correct answer"(that is, there is no correct answer) then choosing an answer at random will be correct 25% of the time, if you shift to viewing 25% as the "correct answer" then you have a 50% chance of randomly selecting a "correct answer"

what is the chance [the question] will be correct? C)0%

q1=what is the chance [the question] will be correct?

what is the chance [an answer to q1] will be correct? 25%

q2=what is the chance [an answer to q1] will be correct?

what is the chance [an answer to q2] will be correct? 50%